Results of Dark Matter Search using the Full PandaX-II Exposure

Wang, Qiuhong; Abdukerim, Abdusalam; Chen, Wei; Chen, Xun; Chen, Yunhua; Cheng, Chen; Cui, Xiangyi; Fan, Yingjie; Fang, Deqing; Fu, Changbo; Fu, Mengting; Geng, Lisheng; Giboni, Karl; Gu, Linhui; Guo, Xuyuan; Han, Ke; He, Changda; Huang, Di; Huang, Yan; Huang, Yanlin; Huang, Zhou; Ji, Xiangdong; Ju, Yonglin; Li, Shuaijie; Liu, Huaxuan; Liu, Jianglai; Ma, Wenbo; Ma, Yugang; Mao, Yajun; Meng, Yue; Ni, Kaixiang; Ning, Jinhua; Ning, Xuyang; Ren, Xiangxiang; Shang, Changsong; Si, Lin; Shen, Guofang; Tan, Andi; Wang, Anqing; Wang, Hongwei; Wang, Meng; Wang, Siguang; Wang, Wei; Wang, Xiuli; Wang, Zhou; Wu, Mengmeng; Wu, Shiyong; Wu, Weihao; Xia, Jingkai; Xiao, Mengjiao; Xie, Pengwei; Yan, Binbin; Yang, Jijun; Yang, Yong; Yu, Chunxu; Yuan, Jumin; Yuan, Ying; Zeng, Xinning; Zhang, Dan; Zhang, Tao; Zhao, Li; Zheng, Qibin; Zhou, Jifang; Zhou, Ning; Zhou, Xiaopeng

doi:10.48550/arxiv.2007.15469

Cited by 10 publications

(15 citation statements)

References 29 publications

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“…where G(E r , E rec ) is the Gaussian function which takes into account the finite energy resolution of the detector with a resolution power σ(E r )/E r and (E rec ) is the detector efficiency taken from ref. [38], dφ/dE ν is the solar flux spectrum taken from [39] and N e is the 1007.7 ton-day exposure of PandaX-II [1]. Here, dσ vαe /dE r are cross sections given in eq.…”

Section: Arxiv:200810279v1 [Hep-ph] 24 Aug 2020mentioning

confidence: 99%

Constraints on general light mediators from PandaX-II electron recoil data

Khan

2021

Physics Letters B

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Section: Arxiv:200810279v1 [Hep-ph] 24 Aug 2020mentioning

confidence: 99%

Constraints on general light mediators from PandaX-II electron recoil data

Khan

2021

Physics Letters B

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“…Previously, people usually focused on the Higgs portal dark matter for a singlet scalar dark matter or a complex scalar dark matter, with a scalar quartic coupling like s 2 H † H or S * SH † H [35][36][37][38][39][40][41][42]. Such dark matter model is heavily constrained by the direct detection experiments [43][44][45][46][47][48][49], especially the recent results from XENON1T [12] and PandaX [13,50,51], leaving only the resonance region viable. Different from Higgs portal dark matter model, a singlet coannihilation scalar will open the parameter space from DM direct detection [52][53][54], via significant coannihilation contribution.…”

Section: Introductionmentioning

confidence: 99%

Heavy long-lived coannihilation partner from inelastic Dark Matter model and its signatures at the LHC

Guo,

He,

Liu

et al. 2021

Preprint

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The coannihilation mechanism is a well-motivated alternative to the simple thermal freeze-out mechanism, where the dark matter relic density can be obtained through the coannihilation with a partner particle of similar mass with dark matter. When the partner particle is neutral, the inelastic nature of dark matter can help it to escape the direct detection limits. In this work, we focus on the coannihilation scenario in which the annihilation cross section is dominated by the partner-partner pair annihilation. We pay special interest on the parameter space where the coannihilation partner is long-lived, which leads to displaced signatures at the collider. In such case, it opens the heavy mass parameter space for the coannihilation dark matter, comparing with those dominated by the partner-dark matter annihilation. Specifically, we propose an inelastic scalar dark matter model with a broken symmetry, which realizes the domination of partner-partner pair annihilation. Then, we study two different realizations of the coannihilation partner decay and the existing constraints from the relic abundance, direct and indirect dark matter detection and the collider searches. We focus on the channel that the long-lived coannihilation partner decays to dark matter plus leptons. The high-luminosity LHC can reach good sensitivities for such heavy dark matter and coannihilation partner around 100-700 GeV.

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“…Many experiments have been done to search for the direct or indirect signals of DM particles [1][2][3][4][5][6][7][8] . Among them, a lot of attentions have been paid to the detection of WIMP DM.…”

Section: Introductionmentioning

confidence: 99%

“…So far, no signals of DM particles have been found in these experiments. In particular, the direct detection experiments [1][2][3] have pushed WIMP-nucleus interaction cross section to be less than around 10 −46 cm 2 . These direct detection measurements have raised serious concern that WIMP should have interactions much weaker than we thought before and overproduction of WIMP relic density in thermal production mechanism seems hard to avoid.…”

Section: Introductionmentioning

confidence: 99%

Light dark matter from dark sector decay

Cheng,

Liao

2020

Preprint

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We study the possibility that light dark matter can be produced with right relic density by the decay of other dark sector particles. We study this possibility in a model with right-handed neutrinos, a dark sector singlet scalar and a dark sector singlet fermion. The decay of the heavier dark sector singlet scalar gives rise to the lighter dark sector singlet fermion which serves as the dark matter candidate. We show that the right dark matter relic density can be produced by the decay of the dark sector singlet scalar. We find that the mass of the dark sector singlet fermion can be GeV scale or MeV scale and the interaction of the dark sector singlet fermion is very weak. The dark sector singlet scalar can have a mass of GeV-TeV scale and can have weak scale interactions with the Standard Model(SM) particles. So, in this scenario, dark matter has an interaction with the SM much weaker than the weak interaction, but the dark sector still has weak scale interaction with the SM.

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Results of Dark Matter Search using the Full PandaX-II Exposure

Cited by 10 publications

References 29 publications

Constraints on general light mediators from PandaX-II electron recoil data

Constraints on general light mediators from PandaX-II electron recoil data

Heavy long-lived coannihilation partner from inelastic Dark Matter model and its signatures at the LHC

Light dark matter from dark sector decay

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